Apparatus for making paper



Aug. 23, 1932. 1 w. H. CANNARD 1,873,111

APPARATUS FOR MAKING PAPER Filed April 19, 1929 2 Sheets-Sheet lgwuentoz Aug. 23, 1932. w. H. CANNARD 7 APPARATUS FOR MAKING PAPER FiledA ril 19, 1929 2 Sheets-Sheet 2 J3 "TM/$4:

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APPARATUS FOR .311.

Application filed April 19,

This invention relates to apparatus for and method of making paper.

It is an object of the invention to provide a paper making machine withmeans for de- 6 positing pulp upon a traveling screen 1n the shortestpossible time to thereby eliminate as far as possible a tendency of thefibers to assume a more or less arallel relation, and thus produce papersubstantially equal 10 strength in all directions.

Another object of the invention is to provide a pulp container for papermaking machines which may be mounted above theusual traveling screen andfrom which pulp is discharged upon the screen in a directionsubstantially perpendicular to the direction of travel of themachine-the socalled machine direction.

Another object of the invention is to pro- 2 vide a pulp container forpaper making machines which is'mounted above a traveling screen andwhich may be adjusted with respect thereto to assure that the fibersdeposited upon the screen will have no opportunity to assume a parallelrelation.

Still another object of the invention is to provide a pulp containerhavin a discharge openin which may be ad uste as to width to regu atethe quantity of pulp discharged therefrom, and which discharge openingis also adjustable as to length to vary the width of the sheet to beformed.

A further object of the invention is to provide a paper making machinehaving a traveling screen with a pulp container located above the screenand a suction box located below the screen substantially in alinementwith the discharge opening in the pulp container, whereby a substantialuantity of water in the pulp israpidly wit drawn so that the fibers willlie upon the screen substantially as deposited by the pulp container.

The invention, in addition to the objects already set forth, alsocontemplates a novelmethod of makingpaper by depositing pulp upon atraveling screen in a direction substantially erpendicular to themachine direction an under a pressure suficient to overcome the tendencyto flow eiiected by movement of the screen, the liquid in the pulp1929;. seen no. seam.

being substantially all removedjmmediately upon deposltion of the pulp.

Other objects of the invention, and the many advantages thereof, will bemore fully brought out as the description proceeds.

In the accompanying drawings, 1 have illustrated a practical embodimentof my in-.

vention; but it is to be understood that the drawings are illustrativemerely and are not to be understood as limiting the invention to thedetails of construction therein disclosed. It will be readilyappreciated by those skilled in the art that the invention issusceptible of a wide range ofmodification and equlvalency fallingwithin the scope of the invention as defined in the appended claims.

In these drawings:

Fig. 1 is a side elevation of a machine constructed in accordance withmy invention, showing particularly its application to a socalledFourdrinier machine;

Fig. 2 is a side elevation, on an enlarged scale, ofa pulp' container ofK invention and the mechanismassociated therewith;

Fig. 3 is a longitudinal section of the pulp container; i

Fig. t is a transverse section thereof; and

Fig. 5 is a side elevation, more or less diagrammatic, showing theapplication of the pulp supplying devices of my invention as applied toa cylinder machine. I

Referring to Fig. 1 of the drawings, in which is illustrated theapplication of the pulp supplying mechanism of my invention to aFourdrinier machine the referencenumeral 1 indicates the ld ourdrinierwire which travels around the breast roll 2. The reference-numeral 3indicates the usual deckle straps. This portion of the machine is of theusual Fourdrinier construction, and needs no further explanation here.

The reference-numeral 4 indicates a supporting frame of inverted Ushape, which is vertically adjustable in standards 5, it beingunderstood that there are two such frames,

onelo cated at each side of the Fourdrinier wire. Interposed between theframe 4 and the supporting standards 5 are located shortreversely-threaded sections 6 provided with adapparent that w on theadjusting nuts 7\ are rotated, the frame 4 will be elevated or lowered,depending upon the direction of rotation of the nuts.

The reference-numeral 8 indicates, gener ally, the pulp container of myinyentwn from. whic pulp is supplied to the Fourdrinier screen 1. Thispulp container comprises a cylindrical body portion 9, which is providedwith a dischar e opening 10 extending the full lengthnt ereof. Heads orend plates 11 are removably secured to the ends of the body portion 9,as by bolts 12 which are pivoted on lugs 13 on the body portion 9 andwhich engage slotted in s 14 on the end plates. Each bolt is provi edwith a securing nut 15 by which the body portion and end plates aremaintained in assembled relation. Further to assure accurate positioningof the end plates with respect to the body portion, the end plates areprovided with suitable dowel pins 15 which engage in apertures 15 in thebody portion 9. To provide a leakproof joint between the body portionand the end plates, suitable packing material 16 may be inserted betweenthem.

B referring to Fig. 4, it will be seen that the d portion 9 of the pulpcontainer contacts with one side of the form 4. As has been heretoforestated, it is an object of my invention to provide a pulp container witha discharge opening which is adjustable as to width so that the quantityof pulp discharged therefrom may be regulated. The

discharge opening 10 is adjusted as to width by means of the mechanismillustrated in Fi 4. The cylindrical body portion 9 is de o mable by theapplication-of pressure upon the side opposite to that at which itcontacts with the frame 4. By the application of pressure u on thisside, it will be apparent that the ischarge opening 10 may be reduced inwidth an that, by relieving the ressure upon this side, the width of thedisc arge o ning may be increased.

The mec anism for adjusting the width of the discharge opening comprisesa short threaded shaft 17 which is threaded into a or projection 18 uponthe side of the body portion 9. The shaft 18 is rotated by a worm gear19 which receives its motion from'a worm 20 which is rotated by a handwheel 21. The worm gear 19 has a bushing 22 which extends through abearing formed in the frame 4, as illustrated in Fig. 4, and is at oneend threaded for the reception of an alining rin 23 through which passesa set screw 24. y the mechanism thus described, it will be seen thatupon rotation of the worm gear 19, the shaft 17 will be caused to applypressure to one side of the body portion 9 of the ulp container and,since the other side of the container is in fixed contact with the frame4, it is evident that the shape of the Levant Y ear is rotated in theopposite direction, the 1 I ody ortion 9 assumes its original contourand, t us, the discharge opening 10 is increased in width. By thisarrangement,

therefore, it will be clear that the quantity of pulp dischar ed fromthe container upon the screen may e varied in accordance with the widthof the discharge 0 ening 10.

Mechanism is'also provided for regulating or varying the length of thedischarge opening 10 so that sheets of different width may be roduced.This mechanism comprises brac ets 25 secured to each of the end plates11 and which are provided with an elongated bearing 26 for a reverselythreaded shaft 27 which is rotatable therein by means of suitable handwheels 28. -Upon the shaft 27 I have'located at each end of the pulpcontainer a closin means or stopper 29 which, as is seen in igs. 2, 3and 4, enter the discharge opening 10 and effectually prevent escape ofpulp therefrom. As is more clearly shown in Figs. 2 and 4, thesestoppers 29 are formed with a triangular portion which extends into thedischarge opening 10, and by reason of this construction they will closesaid opening irrespective of the width of the discharge opening; that isto say, the stoppers 29 close the opening 10 whether it is reduced inwidth by reason of the compression of the body portion 9 or increased inwidth when the pressure is relieved.

In order that the stoppers 29 may at all times be properly seated in thedischarge opening 10, I have provided springs 30 which exert an upwardressure on the stoppers as well as the threa ed shaft 27, and thus urgethe stoppers constantly to their uppermost position. It will beunderstood that the elongated bearing 26 provides for the slightvertical movement of the shaft 27 occasioned by variations in the widthof the openin 10.

Furt er to insure that pulp and liquid will not escape from thecontainer around the stoppers 29, the'end plates 11 are provided withsmaller plates 31 which are provided with V-shaped notches thereincooperating with the configuration of the stoppers, 29, suitable packing32 being interposed between these plates and the stoppers.

Pulp is supplied under pressure to the pulp container through suitableinlet pipes 33 which are connected by supply manifolds 34 to a source ofpulp supply (not shown). The pul in the container is agitated by meansof beater blades 35 which are mounted upon a-shaft 36 journaled as at 37in the end discharge plates 11, the shaft 36 being rotated from a thewire 1 and substantially in alinement .with the discharge opening of thepulp con: tainer, its purpose being to withdraw as quickly as possible asubstantial portion of the liquid in the pulp. It is not essential thatthe suction box be so located, but in the position described it willassist materially in causing'the fibers to lie upon the wire in theposition in which they are deposited.

The description has so far been directed to my improved pulp containeras employed in connection with a Fourdrinier machine of standardconstruction. It will, of course, be appreciated and understood by thoseskilled in the art that the invention will also be employed inconnection with the so-called cylinder machines, as moreor lessdiagrammatically illustrated in Fig. 5.

From the foregoing description, my invention and its mode of operationwill be entirely clear. It is seen that I have provided a pulp containerwhich supplies fibrous pulp to the traveling screen of a paper'makingmachine, the container being positioned above the screen and beingvertically adjustable with respect thereto. By this arrangement, pulp isdischarged from the container upon the screen in a directionsubstantially perpendicular to the machine direction and under pressuresufficiently great to overcome any tendency to flow occasioned by themovement of the screen with respect to the container. The fibers of thepulp will therefore lie upon the screen in substantially the position inwhich they are deposited; that is to say, no opportunity is afforded thefibers for assuming a more or less parallel relation. but, on the otherhand, the pulp, being agitated within thecontainer, is deposited uponthe screen with the fibers in criss-cross relation. Thus, the paperproduced will be of substantially equal strength in all directions,which result cannot be attained by the usual flow method whereby thefibers are permitted to assume a more or less parallel relation.

By the'use of the pulp container of my invention, as described herein,the quantity of pulp supplied to the screen may be varied by adjustingthe width of the discharge opening 10, and also sheetsof differentwidths may be produced by varying the length of the discharge opening 10by manipulation of the stoppers 29.

In the foregoing description, I have also brought out a novel method ofmaking paper, which method includes essentially the step of depositingpulp upon the traveling screen of a paper making machine in a directionsubstantially perpendicular to the machine direction and under pressuresufiicient to overcome the tendency to flow occasioned by movement ofthe screen. This method is readily distinguishable from the methodheretofore generally in use and by which the pulp is permitted to flowupon the screen from a source of pulp supply located substantiallyin'horizontal alinement with the screen. By my method, as hereindescribed, a paper of more nearly equal strength in all directions 1sproduced. Furthermore, in carrying out my method and in the use of theapparatus herein described, a pulp of greater consistency than'thatheretofore used may be employed; that is to say, where by former methodsthe pulp contains from 95 to 99%% water and 5 to .05% of stock, it ispossible by my method to decrease the volume of water to from to andthus increase the stock content of the pulp. The saving afforded willreadily be appreciated by those skilled in the art.

I claim: i j

1. In a paper making machine, the comb1- nation with a movable screen ofmeans for pro ecting pulp upon said screen in a direction substantiallyperpendicular-to the machine direction and under pressure sutficient toovercome any tendency to flow caused by movement of the screen.

2. Paper making apparatus including a movable 50113811,?3. pulpcontainer mounted above said screen, a discharge opening in saidcontainer, and means to adjust the width ofto vary the distance betweensaid container and said screen.

4. Paper making apparatus including a movable screen, a pulp containermounted above said screen, a discharge opening in said container, meansto adjust the width of said discharge opening to vary the quantity ofpulp deposited 'upon said screen, and means to adjust the length of saiddischarge opening to vary the width of the sheet to be formed.

5. Paper making a paratus including a movable screen, a pu containermounted above saidscreen, a discharge opening in said container, meansto adjust the width of said discharge opening to vary the quantity ofpulp deposited upon said screen, means to adjust the length of saiddischar e opening to vary the width of the sheet to formed, and means tovary the distance between said container and said screen.

6. Paper making apparatus comprising a movable screen, standardsjuxtaposed to said screen, a pulp container supported b said standards,and means to ad ust the he of said standards whereby to vary the istancebetween said container and said screen.

7. A pulp container including a deformable body portion, va dischargeopening thereiht in, and means to deform said body portion to vary thewidth of said discharge opening.

8. A ulp container including a deformablybo y portion, a dischareopening therein, means to deform said ody portion to vary the width ofsaid discharge opening, andmeans to vary the length of said dischargeopening, said last-mentioned means operating to close a portion of saiddischarge opening at any width to which said opening may be adjusted.

9. A pulp container including a body portion having a discharge 0 eningtherein,

means to adjust the width 0 said discharge 0 ening, means closing aportion of said disc arge opening, means to adjust said closing meanslongitudinally of said opening to vary the len thereof,'and means tomain tain said closing means in contact with the walls of said dischargeopening.

projecting pulp upon said screen in a direction substantially chinedirection an under pressure suificient to overcome an tendency to flowcaused by movement of t e screen, and a suction box beneath said screenand .in alignment with (perpendicular to the ma said projector forremoving moisture from y the pulp, the path of travel of said screenbemg substantially at right angles to the axis of iflld pulp projectingmeans and said suction In testimony whereof, I aflix my signature..

WILLIAM H. CANNARD.

10. A pulp container including a body portion having a discharge openingtherein, end plates for said body portion, brackets mounted on said endlates, a threaded shaft journaled in said rackets, and means on saidthreaded shaft for closing a portion of said discharge opening.

11. A pulp container including a body portion having a discharge openingtherein, end plates for said body portion, brackets mount- 7 ed on saidend plates, a threaded shaft journaled in said brackets, means on saidthreaded shaft for closing a portion of said discharge opening, andmeans to rotate said threaded shaft whereby said closing means is movedlongitudinally of said discharge opening to vary the length thereof.

12. A pulp container including a body portion having a. dischargeopening therein, end plates for said body portion, a shaft journaled insaid end plates, beater'blades on said shaft, means to supply pulp tosaid container, and means to rotate said shaft whereby the pulp isagitated by said heater blades.

13. Paper making apparatus including a movable screen, a pulp containerlocated i screen to insure deposition of the pulp fibers in non-parallelrelation for any speed of movement of the screen.

15. In a paper making machine, the combination with a movable screen ofmeans for

